System for transposing the wires of a power transmission line,mainly of a high voltage power transmission line



1,203,540 10/1916 Harrington United States Patent Inventors AbramSimkhovich Zelichenko,

4, korpus II, kv. Staro-Kashirskoe shosse, 51; Evgeny ArkadievichKhvoles, ulitsa Krapotkina, 34, kv. 22; Elizaveta Alexandrovna Sokolova,ulitsa Dmitrovka, 38, kv. 21, Moscow, U.S.S.R.,

Appl. No, 836,856

Filed June 26, 1969 Patented Dec. 1, I970 SYSTEM FOR TRANSPOSING THEWIRES OF A POWER TRANSMISSION LINE, MAINLY OF A HIGH VOLTAGE POWERTRANSMISSION LINE 4 Claims, 1 Drawing Fig.

US. Cl 174/33, 174/43 Int. Cl H02g 7/20 Field ofSearch 174/33, 40,

References Cited UNITED STATES PATENTS FOREIGN PATENTS 639,560 3/1928France 174/33 1,091,319 10/1954 France 174/40 OTHER REFERENCES E. T.Painton, Mechanical Deisgn of Overhead Electrical Transmission Lines, D.Van Nostrand C0.. New York. 1925, pages 223 230.

Primary Examiner- Laramie E. Askin Attorney-Waters, Roditi, Schwartz &Nissen ABSTRACT: A system is provided for transposing the phases of ahigh voltage electrical transmission line having a horizontalarrangement of three wires mounted on respective vertical poles. Forthis purpose, two additional vertical poles with a phase line suspendedtherebetween are provided and loop connectors effect phase connectionbetween the line and wires directly and without the employment ofadditional insulator strings or brackets on the poles for suspending thelines. This considerably simplifies the pole design and reduces thenumber of insulators. The outer vertical phase poles and the twoadditional verticals poles are displaced along and across thetransmission line with respect to the middle vertical pole a distancesufficient for proper electrical spacing to be observed between thewires of opposite phases, the loop connectors and the poles, and theloop connectors and the ground.

TRANSMISSION LINE, MAINLY OF A HIGH VOLTAGE POWER TRANSMISSION LINE Thepresent invention relates to a system for transposing wires of powertransmission lines, mainly those rated for ultrahigh voltages such as inmounting ac. power transmission lines.

Widely known in the art isa system for transposing wires of ahigh-voltage power transmission line on a three strut pole with twoadditional struts, in which the transposition of the wires of the firstand middle phases is accomplished by means of supporting insulatorchains or strings fixed on brackets of the first and middle struts, andthe third phase is transposed by means of one supporting and twotie-down strings of insulators arranged on the bracketot the third strutand on two additional struts disposed parallel to the bisectrixof theinternal angle of the route turn. I

In the above-mentioned device, the three struts of the main support arearranged along the bisectrix of the internal angle of turn of the routeof the power transmission line and are equally spaced from each other. l

Such a device is complicated and uneconomical due to the necessity ofusing additional brackets on the pole struts, which make the latterheavier; and due to the use of a great number of insulator chains orstrings It is an object of the present invention to eliminate theabove-mentioned disadvantages.

The mainobject of the present invention is to provide a system fortransposing the wires of a high-voltage power transmission line whichfeatures lighter construction of the poles and a smaller number ofinsulator, chains.

This object is accomplished by arrangement in which, in the system fortransposing the wires" of a power transmission line, mainly ahigh-voltage power transmission line, on a three strut pole with twoadditional struts, according to the invention, the extreme struts of thethree strut' pole and the additional struts are displaced along andacross the route of thepower transmission line relative to the middlestrut by a distance determined by the electrical gage between the strutsof the pole and the connecting loops, the insulator strings or chains ofthe respective phases being directly connected by the loop.

The system proposed herein for the transpositionof the' wires of a powertransmission line in accordance with the present invention isinstrumental in achieving the objects set forth above.

For a better understanding of the present invention a detaileddescription of an exemplary embodiment thereof is given hereinbelow withreference to the sole figure of the accompanying drawing which shows aplan view of the apparatus for transposing the wires of a powertransmission line.

As can be seen from the drawing, for transposing the wires a of a powertransmission line at the turns of the line route, extreme struts l and 2of a three leg pole are displaced along and across the powertransmission line route relative to middle strut 3 by a distance suchthat phases 4 and 5 can be connected directly, without. recourse tosupporting insulator chains, by loops 6 and 7.

The distance by which the struts 1 and 2 are displaced relative to thestrut 3 is determined by the electrical gage possible between the polestruts and the connecting loops.

The third phase 8 is transposed by means of additional struts 9 and 10and loops 1] and 12, said loops being passed from the wires between thestruts 9'and 10 onto the wires of the third phase also directly, withoutsupporting insulator chains.

The distance between the additional struts 9 and 10 relative to themiddle strut 3 of the pole is also determined by the electrical gagesrequired to be observed between the line wires and the pole struts.

We claim: 1

1. In a system for transposing the phases of a high voltage electricaltransmission line having a horizontal arrangement of three wires mountedon respective vertical poles constituting a middle and two outer poles,an improvement comprising two additional vertical poles and a phase linebetween said additional poles, and means including loop connecterseffecting phase connection between the line and wires directly andwithout the employment of additional insulator strings or brackets onthe poles for suspending the lines, the outer vertical poles and the twoadditional vertical poles being displaced along and across thetransmission line with respect to the middlevertical pole a distancesufiicient for the electrical spacing to be observed betweenthe wires ofopposite phases, the loop connecters and the poles, and the loopconnecters and the ground.

2. In a system as claimed in claim 1 wherein said outer poles I I aredisplaced along the line in opposite directions relative to the middlepole, one of said additional poles being between the middle and one ofthe outer poles, the other additional pole lying on a side of the otherouter pole opposite the middle phase line. I 1

3. In a system'as claimed .in claim 2 wherein said phase linebetween'theadditional poles is inclined at an angle relative to saidwires. 4. In a system as claimed in claim 3 wherein two of said loopconnecters extend from said phase line between the additional polesrespectively to the outer wires and two further loop connectersrespectively extend from the middle wire to the two outer wires.

